<template>
  <div class="sqaue-left-box">
    <div class="header">
      <div class="title">3D饼图</div>
      <div class="tool" @click="goToWaterBallPage">
        {{ $store.state.fullScreenStatus["sqaueLeft"] ? "返回主页" : "全屏" }}
      </div>
    </div>
    <div class="sqaue-left" ref="sqaue-left">我是水球图</div>
  </div>
</template>

<script>
/*
 *@Date: 2023-11-14 22:40:31
 *@Description: 模块描述
 */
import { mapMutations } from "vuex"
export default {
  name: "",
  data() {
    return {
      myCharts: null,
    }
  },
  created() {},
  mounted() {
    this.initEcharts()
    window.addEventListener("resize", this.screenUpdate)
  },
  destroyed() {
    this.myCharts.dispose()
    this.myCharts=null
    window.removeEventListener("resize", this.screenUpdate())
  },
  methods: {
    ...mapMutations([
      //使用es6的拓展运算符
      "changeFullScreenStatus",
    ]),
    // 初始化图表
    initEcharts() {
      const sqaueLeft = document.querySelector(".sqaue-left")
      this.myCharts = this.$echarts.init(sqaueLeft)
      // 传入数据生成 option
      const optionsData = [
        {
          name: "猪",
          value: 4256,
          itemStyle: {
            //   opacity: 0.5,
            color: "#2A71FF",
          },
        },

        {
          name: "鸡",
          value: 2356,
          itemStyle: {
            //   opacity: 0.5,
            color: "#00EDFE",
          },
        },
        {
          name: "牛",
          value: 2018,
          itemStyle: {
            //   opacity: 0.5,
            color: "#FEDB4B",
          },
        },
        {
          name: "鸭",
          value: 1998,
          itemStyle: {
            //   opacity: 0.5,
            color: "#FE7C2F",
          },
        },
      ]
      const series = this.getPie3D(optionsData, 0.8, 240, 28, 26, 0.5)
      series.push({
        name: "pie2d",
        type: "pie",
        label: {
          opacity: 1,
          fontSize: this.$fitChartFont(14),
          lineHeight: this.$fitChartFont(20),
          textStyle: {
            fontSize: this.$fitChartFont(14),
            color: "#fff",
          },
        },
        labelLine: {
          length: this.$fitChartFont(30),
          length2: this.$fitChartFont(30),
        },
        startAngle: -30, //起始角度，支持范围[0, 360]。
        clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
        radius: ["40%", "60%"],
        center: ["50%", "50%"],
        data: optionsData,
        itemStyle: {
          opacity: 0,
        },
      })
      // 准备待返回的配置项，把准备好的 legendData、series 传入。
      let option = {
        legend: {
          show: true,
          tooltip: {
            show: true,
          },
          orient: "vertical",
          data: ["猪", "鸡", "牛", "鸭"],
          top: "center",
          itemGap: this.$fitChartFont(14),
          itemHeight: this.$fitChartFont(8),
          itemWidth: this.$fitChartFont(17),
          right: "2%",
          textStyle: {
            color: "#fff",
            fontSize: this.$fitChartFont(12),
          },
        },
        animation: true,
        tooltip: {
          formatter: (params) => {
            if (
              params.seriesName !== "mouseoutSeries" &&
              params.seriesName !== "pie2d"
            ) {
              return `${
                params.seriesName
              }<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${
                params.color
              };"></span>${
                option.series[params.seriesIndex].pieData.value + "人"
              }`
            }
          },
          textStyle: {
            fontSize: this.$fitChartFont(14),
          },
        },
        title: {
          x: "center",
          top: `${this.$fitChartFont(20)}`,
          textStyle: {
            color: "#fff",
            fontSize: this.$fitChartFont(22),
          },
        },
        // backgroundColor: "#0E3567",
        labelLine: {
          show: true,
          lineStyle: {
            color: "#7BC0CB",
          },
          normal: {
            show: true,
            length: this.$fitChartFont(10),
            length2: this.$fitChartFont(10),
          },
        },
        label: {
          show: true,
          position: "outside",
          formatter: "{b} \n{d}%",
          textStyle: {
            color: "#fff",
            fontSize: `${this.$fitChartFont(14)}px`,
          },
        },
        xAxis3D: {
          min: -1,
          max: 1,
        },
        yAxis3D: {
          min: -1,
          max: 1,
        },
        zAxis3D: {
          min: -1,
          max: 1,
        },
        grid3D: {
          show: false,
          boxHeight: 0.01,
          //top: '30%',
          bottom: `${this.$fitChartFont(50)}%`,
          // environment: "rgba(255,255,255,0)",
          viewControl: {
            distance: 180/(this.$fitChartFont(180)/this.$fitChartFont(180)),
            alpha: 25,
            beta: 60,
            autoRotate: true, // 自动旋转
          },
        },
        series: series,
      }
      if (this.myCharts) {
        this.myCharts.setOption(option)
      }
    },
    // 图表socket数据更新
    updateData() {
      // const option = {
      // }
      // this.myCharts.setOption(option)
      // this.myCharts.resize()
    },
    // 视口大小改变时，图表渲染
    screenUpdate() {
      // 传入数据生成 option
      const optionsData = [
        {
          name: "猪",
          value: 4256,
          itemStyle: {
            //   opacity: 0.5,
            color: "#2A71FF",
          },
        },

        {
          name: "鸡",
          value: 2356,
          itemStyle: {
            //   opacity: 0.5,
            color: "#00EDFE",
          },
        },
        {
          name: "牛",
          value: 2018,
          itemStyle: {
            //   opacity: 0.5,
            color: "#FEDB4B",
          },
        },
        {
          name: "鸭",
          value: 1998,
          itemStyle: {
            //   opacity: 0.5,
            color: "#FE7C2F",
          },
        },
      ]
      const series = this.getPie3D(optionsData, 0.8, 240, 28, 26, 0.5)
      series.push({
        name: "pie2d",
        type: "pie",
        label: {
          opacity: 1,
          fontSize: this.$fitChartFont(14),
          lineHeight: this.$fitChartFont(20),
          textStyle: {
            fontSize: this.$fitChartFont(14),
            color: "#fff",
          },
        },
        labelLine: {
          length: this.$fitChartFont(30),
          length2: this.$fitChartFont(30),
        },
        startAngle: -30, //起始角度，支持范围[0, 360]。
        clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
        radius: ["40%", "60%"],
        center: ["50%", "50%"],
        data: optionsData,
        itemStyle: {
          opacity: 0,
        },
      })
      // 准备待返回的配置项，把准备好的 legendData、series 传入。
      let option = {
        legend: {
          show: true,
          tooltip: {
            show: true,
          },
          orient: "vertical",
          data: ["猪", "鸡", "牛", "鸭"],
          top: "center",
          itemGap: this.$fitChartFont(14),
          itemHeight: this.$fitChartFont(8),
          itemWidth: this.$fitChartFont(17),
          right: "2%",
          textStyle: {
            color: "#fff",
            fontSize: this.$fitChartFont(12),
          },
        },
        animation: true,
        tooltip: {
          formatter: (params) => {
            if (
              params.seriesName !== "mouseoutSeries" &&
              params.seriesName !== "pie2d"
            ) {
              return `${
                params.seriesName
              }<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${
                params.color
              };"></span>${
                option.series[params.seriesIndex].pieData.value + "人"
              }`
            }
          },
          textStyle: {
            fontSize: this.$fitChartFont(14),
          },
        },
        title: {
          x: "center",
          top: `${this.$fitChartFont(20)}`,
          textStyle: {
            color: "#fff",
            fontSize: this.$fitChartFont(22),
          },
        },
        // backgroundColor: "#0E3567",
        labelLine: {
          show: true,
          lineStyle: {
            color: "#7BC0CB",
          },
          normal: {
            show: true,
            length: this.$fitChartFont(10),
            length2: this.$fitChartFont(10),
          },
        },
        label: {
          show: true,
          position: "outside",
          formatter: "{b} \n{d}%",
          textStyle: {
            color: "#fff",
            fontSize: `${this.$fitChartFont(14)}px`,
          },
        },
        xAxis3D: {
          min: -1,
          max: 1,
        },
        yAxis3D: {
          min: -1,
          max: 1,
        },
        zAxis3D: {
          min: -1,
          max: 1,
        },
        grid3D: {
          show: false,
          boxHeight: 0.01,
          //top: '30%',
          bottom: `${this.$fitChartFont(50)}%`,
          // environment: "rgba(255,255,255,0)",
          viewControl: {
            distance: 180/(this.$fitChartFont(180)/this.$fitChartFont(180)),
            alpha: 25,
            beta: 60,
            autoRotate: true, // 自动旋转
          },
        },
        series: series,
      }
      if (this.myCharts) {
        this.myCharts.setOption(option)
        this.myCharts.resize()
      }
    },
    goToWaterBallPage() {
      if (!this.$store.state.fullScreenStatus.sqaueLeft) {
        this.$router.push("/sqaueLeftPage")
        this.changeFullScreenStatus({ type: "sqaueLeft", value: true })
      } else {
        this.$router.back(1)
        this.changeFullScreenStatus({ type: "sqaueLeft", value: false })
      }
    },
    getParametricEquation(
      startRatio,
      endRatio,
      isSelected,
      isHovered,
      k,
      height
    ) {
      // 计算
      let midRatio = (startRatio + endRatio) / 2

      let startRadian = startRatio * Math.PI * 2
      let endRadian = endRatio * Math.PI * 2
      let midRadian = midRatio * Math.PI * 2

      // 如果只有一个扇形，则不实现选中效果。
      if (startRatio === 0 && endRatio === 1) {
        isSelected = false
      }

      // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
      k = typeof k !== "undefined" ? k : 1 / 3

      // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
      let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0
      let offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0

      // 计算高亮效果的放大比例（未高亮，则比例为 1）
      let hoverRate = isHovered ? 1.05 : 1

      // 返回曲面参数方程
      return {
        u: {
          min: -Math.PI,
          max: Math.PI * 3,
          step: Math.PI / 32,
        },

        v: {
          min: 0,
          max: Math.PI * 2,
          step: Math.PI / 20,
        },

        x: function (u, v) {
          if (u < startRadian) {
            return (
              offsetX +
              Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
            )
          }
          if (u > endRadian) {
            return (
              offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
            )
          }
          return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate
        },

        y: function (u, v) {
          if (u < startRadian) {
            return (
              offsetY +
              Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
            )
          }
          if (u > endRadian) {
            return (
              offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
            )
          }
          return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate
        },

        z: function (u, v) {
          if (u < -Math.PI * 0.5) {
            return Math.sin(u)
          }
          if (u > Math.PI * 2.5) {
            return Math.sin(u)
          }
          return Math.sin(v) > 0 ? 1 * height : -1
        },
      }
    },
    // 生成模拟 3D 饼图的配置项
    getPie3D(pieData, internalDiameterRatio) {
      let series = []
      let sumValue = 0
      let startValue = 0
      let endValue = 0
      let legendData = []
      let k =
        typeof internalDiameterRatio !== "undefined"
          ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
          : 1 / 3

      // 为每一个饼图数据，生成一个 series-surface 配置
      for (let i = 0; i < pieData.length; i++) {
        sumValue += pieData[i].value

        let seriesItem = {
          name:
            typeof pieData[i].name === "undefined"
              ? `series${i}`
              : pieData[i].name,
          type: "surface",
          parametric: true,
          wireframe: {
            show: false,
          },
          pieData: pieData[i],
          pieStatus: {
            selected: false,
            hovered: false,
            k: k,
          },
        }

        if (typeof pieData[i].itemStyle != "undefined") {
          let itemStyle = {}

          typeof pieData[i].itemStyle.color != "undefined"
            ? (itemStyle.color = pieData[i].itemStyle.color)
            : null
          typeof pieData[i].itemStyle.opacity != "undefined"
            ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
            : null

          seriesItem.itemStyle = itemStyle
        }
        series.push(seriesItem)
      }

      // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
      // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
      for (let i = 0; i < series.length; i++) {
        endValue = startValue + series[i].pieData.value
        series[i].pieData.startRatio = startValue / sumValue
        series[i].pieData.endRatio = endValue / sumValue
        series[i].parametricEquation = this.getParametricEquation(
          series[i].pieData.startRatio,
          series[i].pieData.endRatio,
          false,
          false,
          k,
          series[i].pieData.value
        )

        startValue = endValue

        legendData.push(series[i].name)
      }
      return series
    },
  },
}
</script>

<style lang="scss" scoped>
.sqaue-left,
.sqaue-left-box {
  width: 100%;
  height: 100%;
  position: relative;
  .header {
    position: absolute;
    width: 100%;
    padding: vw(5);
    z-index: 9;
    display: flex;
    justify-content: space-between;
    .title {
      color: white;
      font-size: vw(20);
    }
    .tool {
      cursor: pointer;
      color: white;
      font-size: vw(20);
    }
  }
}
</style>

